var head = null;

var delay = 10000;

var path = "../img/heads/";
var heads = new Array();
heads[0] = "head1.jpg";
heads[1] = "head2.jpg";
heads[2] = "head3.jpg";
heads[3] = "head4.jpg";
heads[4] = "head5.jpg";
heads[5] = "head6.jpg";
heads[6] = "head7.jpg";

var currentImage = 0;

function initHeadChanger(headID) {
  head = document.getElementById(headID);
  if(head == null) return;

  setTimeout('changeImage();', delay);
}

function changeImage() {
  currentImage++;

  if(currentImage < 0) currentImage = 0;
  else if(currentImage >= heads.length) currentImage = 0;

  head.src = path + heads[currentImage];
  
  setTimeout('changeImage();', delay);
}